How can we help you?

Yes. Our Teams & Schools plan offers volume pricing, central learner management and group progress reports. Write to sales@kustau.com for a custom quote.

Refund requests are handled according to our Refund Policy. If you think you were charged by mistake, contact support within 7 days of the payment and include your account email.

Yes — subscriptions renew automatically at the end of each billing period so your learning is never interrupted. We send a reminder email before each annual renewal.

Yes. Open Subscription → Manage subscription and select the new plan. The change takes effect at your next renewal date, so you never lose days you have already paid for.

Go to Dashboard → Subscription → Manage subscription and choose Cancel. Your access continues until the end of the period you have already paid for, and you will not be charged again.

Both plans give you the same full access. Monthly is $14 per month and can be cancelled at any time. Annual works out at $9 per month, billed once a year — a 35% saving — and also includes certificate eligibility and priority support.

One subscription unlocks every level in your language category — from A1 to C1 — including all units, lessons, quizzes and video Review Lessons. There are no extra charges for individual levels.

A receipt is emailed after every successful payment. You can also find your payment history under Dashboard → Subscription → Billing history.

Prices are shown in US dollars. At checkout, Flutterwave may display the amount in your local currency; the final amount depends on your bank or Mobile Money operator’s exchange rate.

Occasionally a payment shows twice while it is being processed and the duplicate disappears automatically within a few days. If both charges are confirmed, contact us and we will refund the duplicate.

• Check that your Mobile Money account has enough balance, including any operator fees.
• Approve the payment request on your phone within the time limit (usually a few minutes).
• Make sure the number entered at checkout is the one linked to your wallet.

If you were debited but your subscription is not active after 30 minutes, contact support with the transaction reference — we will fix it quickly.

Payments are processed securely by Flutterwave. Depending on your country you can pay by:

• Debit or credit card (Visa, Mastercard)
• Mobile Money — including Orange Money and MTN MoMo
• Other local options shown at checkout

Contact support from the email address linked to your account. Cancel any active subscription first — deleting your account permanently removes your progress and certificates.

Yes. You can sign in on your phone, tablet and computer, and your progress syncs between them. Accounts are personal, so please do not share your login with others.

Go to Dashboard → My account → Profile, update your details and save. If you change your email, we will ask you to confirm the new address.

Use the same Google or Facebook button on the login page. You do not need a separate Kustau password unless you choose to create one in your account settings.

• Check your spam or promotions folder.
• Make sure you entered the same email you signed up with.
• Wait a few minutes, then request a new link — only the latest link will work.

Still nothing? Write to support@kustau.com.

Use the Forgot password page and enter the email you use for Kustau. We will send you a secure reset link that is valid for 30 minutes.

Try a hard refresh (Ctrl + F5 on Windows, Cmd + Shift + R on Mac), or clear your browser cache. If you use a translation or ad-blocking extension, try disabling it for kustau.com.

Kustau is designed to be light on data. On slower connections, let audio and video load fully before pressing play, close other apps or tabs, and use Wi-Fi for video Review Lessons when you can.

Progress is saved when you finish each activity and when you select Mark as complete. Make sure you are signed in to the same account on every device and that you have an internet connection when you complete a pillar.

• Check that your device is not on silent and the volume is up.
• Refresh the page, or close and reopen the lesson.
• Try a stronger connection — switch from mobile data to Wi-Fi if possible.
• Try another browser, or clear your browser cache.

If the problem continues, tell us which lesson, device and browser you are using.

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Kustau works on phones, tablets and computers. For the best experience, use the latest version of Chrome, Safari, Firefox or Edge. Keep your browser up to date for smooth audio and video.

Pass all the Review Lessons in your level to unlock the certificate of completion. Certificates can be downloaded as a PDF and shared on LinkedIn.

Yes — Review Lessons can be retaken as many times as you need. Your best result is kept.

The Review Lesson unlocks once you have completed the last lesson of the unit. Passing it completes the unit and unlocks the next one.

Each course is divided into levels (A1–C1), each level into units, and each unit into lessons. Every unit ends with a video-based Review Lesson covering the lessons before it. See how it works.